Previous Year NEET Question- Gravitation L-2

Question: If $\mathrm{R}$ is the radius of the earth and $\mathrm{g}$ is the acceleration due to gravity on the earth surface. Then the mean density of the earth will be :#

A) $\frac{\pi \mathrm{RG}}{12 \mathrm{~g}}$

B) $\frac{3 \pi R}{4 g G}$

C) $\frac{3 g}{4 \pi R G}$

D) $\frac{4 \pi \mathrm{G}}{3 g R}$

Answer: $\frac{3 \pi R}{4 g G}$#